A Chinese lacquered wood geomancer's compass, - 6 5/8in.(16.8cm) diam., the underside inscribed with characters in red; a Chinese compass with cover, - 2in(6.3cm) diam.; and a diptych string gnomon dial, the upper surface with calendar volvelle, - 1 7/8in.(4.7cm)long; and a Korean brass string gnomon dial with bone hour dial, mercury bubble level and folding plummet, on three adjustable feet, with semi-precious stone caps,- 4½in.(11.5cm)long (4)